Vaidnor VDF730 Series, Руководство пользователя

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VDF730 User Manual Mechanical and Electrical Installation
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49
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Wiring of Control Circuit Terminals
1
)
Wiring of AI terminals
Weak analog voltage signals are easy to suffer external interference
,
and therefore the
shielded cable must be used and the cable length must be less than 20 m
,
as shown in
following fgure
.
Figure 3
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24 Wiring mode of AI terminals
+
10 V
AI1
GND
Potentiometer
PE
<
20 m
VDF730
In applications where the analog signal suffers severe interference
,
install the flter capacitor
or ferrite magnetic core at the analog signal source
.
Figure 3
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25 Wiring of AI terminals in special scenarios
AI1
GND
Cross or wind two or three
coils in the same direction
0
.
022 uF
,
50 V
Ferrite
magnetic core
C
VDF730